a{
    color: #000;
    text-decoration: none;
}
ul,li{
    margin: 0;
    padding: 0;
    list-style: none;
}
.nav-nav{
    width:980px;
    height: 42px;
    margin: 0 auto;
    padding-top: 60px;
}
.nav-nav ul li{
    float: left;
    line-height: 42px;
    height: 42px;
    text-align: center;
    position: relative;
    width: 108px;
}
.navselected{
    height: 42px;
    background: url(../image/nav_current.png) no-repeat 0 center;  /* 用于添加活动样式 */
}
.nav-nav .navselected a{
    color: #fff;
}
.nav-nav ul li a{
    color: #000;
    display: block;
    font-weight: 200;
    font-size: 16px;
}
.nav-nav ul li a:hover{
    height:42px;
    color:#fff;
    background:url(../image/nav_current.png) no-repeat 0 center;
    width:100%;
    font-weight:200;
}
.submenu{
    position: absolute;
    margin: 0 auto;
    left: 0;
    width: 100%;
    z-index: 9999999;
}
.submenu li{
    width: 100%;
    background-color: #fff;
}
.nav-nav .submenu li a{
    background: #fff;
}
.nav-nav .submenu li a span {
    position: relative;
    color: #000;
}